A message from BLM: We are pleased to announce new, exciting positions available at BLM – BUREAU OF LAND MANAGEMENT. It is our hope that qualified, career oriented individuals at your organization or other professionals known to you will actively consider this position and apply accordingly. Efforts on your part to disseminate this information are greatly appreciated.

Mapping efforts were focused in the southeastern portion of Clayton Valley, where the surface trace of the Clayton Valley fault is best expressed in the late Quaternary stratigraphy. Mapping was conducted using 1-m-resolution color orthorectified aerial photographs from the U.S. Department of Agriculture as a base map and aided by aerial stereo photographs provided by the Bureau of Land Management. Alluvial fans were divided on the basis of well-established criteria, such as height above the active channel, development of desert varnish and pavement, degree of rubification, soil development, degree of fan dissection, and bar and swale surface morphology (e.g., Bull, 1991; Ritter et al., 1993; Frankel and Dolan, 2007). Eight alluvial fan units were mapped, each of which are consistent with the western North American alluvial stratigraphic framework established by Bull (1968, 1991). From oldest to youngest, the fan units are as follows: Q2a, Q2b, Q2c, Q2d, Q3a, Q3b, Q3c, and Q4. Surfaces of Q3b age are further subdivided into separate map units due to the fact that the southern portion of the map area contains extensive Q3b deposits with cryptobiotic soil on the fan surface. Undivided bedrock and volcanic ash units were mapped through portions of the valley, some of which also appear to have been deformed by earlier Cenozoic faults. However, the main focus of mapping efforts herein was the Quaternary alluvium and associated faults, and thus the bedrock units have not been divided.

In addition, some of the displaced fan units were dated using terrestrial cosmogenic nuclide (TCN) 10Be depth profiles to determine a surface exposure age of the unit. Details of the TCN dating can be found in Foy (2011) and Foy et al. (2012).

This map was prepared with support from the National Science Foundation, Geological Society of America, Sigma Xi, and the White Mountain Research Station.

A message from BLM: We are pleased to announce new, exciting positions available at BLM – BUREAU OF LAND MANAGEMENT. It is our hope that qualified, career oriented individuals at your organization or other professionals known to you will actively consider this position and apply accordingly. Efforts on your part to disseminate this information are greatly appreciated.

A message from Dr. Jim Faulds, NBMG Director and State Geologist:
We are very pleased to welcome two new faculty members to NBMG—Dr. Rich Koehler and Dr. Bridget Ayling. Dr. Koehler brings expertise in neotectonics and Quaternary geology to NBMG. Dr. Ayling is the new Director of the Great Basin Center for Geothermal Energy and has a wealth of expertise in geothermal energy and unconventional petroleum resources.

Dr. Rich Koehlerhttp://www.nbmg.unr.edu/Staff/Koehler.htmlDr. Rich Koehler recently joined the Nevada Bureau of Mines and Geology and the College of Science at the University of Nevada, Reno as an Assistant Professor. He received his BA in Geology from the University of California, Santa Cruz; MS in Geology from Humboldt State University; and PhD in Geology from University of Nevada, Reno. Dr. Koehler’s research focuses on earthquake geology, Quaternary geology, paleoseismology, geomorphology, and engineering geology. To address problems in these topics, he applies expertise in air photo, lidar, and satellite imagery interpretation; Quaternary geologic and geomorphic mapping; soil stratigraphy; and paleoseismic trenching.

Dr. Koehler’s paleoseismic experience includes studies throughout the western United States, including faults in California, New Mexico, Washington, Alaska, and Nevada and international projects in Turkey, Taiwan, Jamaica, and Haiti. Dr. Koehler has contributed to geologic and seismic hazard evaluation for major infrastructure projects including oil and gas pipelines, liquefied natural gas facilities, hydroelectric dams, nuclear power plants, and industrial and residential developments.

In his current work, Dr. Koehler is focused on researching active faults and Quaternary geology in the Great Basin and surrounding region to better characterize seismic hazards. Toward this goal, he is building a new Quaternary laboratory specifically designed for paleoseismic research, including state-of-the-art computing facilities for processing and analysis of 3-D topographic datasets developed from satellite, lidar, and aerial photography and soil processing facilities for the separation and processing of samples for various Quaternary dating techniques. He also continues to collaborate with colleagues at the USGS on a project assessing earthquake and tsunami recurrence in the Aleutian Islands, Alaska.

Dr. Bridget Ayling recently joined the Nevada Bureau of Mines and Geology and the College of Science at the University of Nevada, Reno as an Associate Professor and new Director of the Great Basin Center for Geothermal Energy. Dr. Ayling is a geologist and geochemist with over nine years of combined experience in the geothermal and unconventional gas sector. She completed her undergraduate and graduate studies in New Zealand, completing a BSc (Hons) degree at Victoria University of Wellington. She then moved to Australia to undertake a PhD in environmental geochemistry and paleoclimate at the Australian National University. After completing her PhD in 2006, Dr. Ayling joined Geoscience Australia (Australia’s national geological survey), where she became involved in geothermal energy research and mapping of Australia’s geothermal resource potential. She spent two years at the University of Utah (2010–2012), working with researchers at the Energy & Geoscience Institute on a range of geothermal projects funded by the U.S. Department of Energy, before returning to Geoscience Australia to pursue research in geothermal reservoir characterization and unconventional petroleum plays.

Dr. Ayling’s current research interests center on reservoir characterization and integration of multidisciplinary datasets to understand the dynamics of geothermal systems at the reservoir and basin scale. She is also interested in reservoir engineering, sustainable management of geothermal resources, renewable energy technologies more broadly, and the promotion of geothermal energy use in developing countries.